Contact Us

1100 McKinley Road
St Marys, OH 45885
P: 419-394-7840
F: 419-394-4776

Forty-Three Million Wheels...

A leader in the manufacture of
cast aluminum automotive wheels.

Our products can be found on some
of the most popular vehicles today.

Our clients include some of the largest
auto manufacturers in the world.

Current Openings

The development, growth and success of Kosei have been due to individual energy, intelligence and dedication of our associates. We are always looking for qualified and motivated people to join our team.  As a subsidiary of Kosei Aluminum Co., LTD., our reputation for high quality products and customer satisfaction has helped us continue to grow and to provide our more than 400 associates with over 30 years of steady employment.  We have plans for future growth and joining the Kosei team will provide you a rewarding career with an excellent compensation and comprehensive fringe benefits package, including:

  • Medical, Dental, and Vision Insurance
  • Prescription Drug Card
  • Employee Assistance Programs (EAP)
  • Short & Long Term Disability
  • 401(k) Retirement Savings Plan with 6 percent Company Match
  • Paid Holidays
  • Paid Vacations
  • Bonus programs
  • Company Paid Uniforms, Safety Shoes, Glasses, etc.
  • Career Advancement Opportunities 

If you're ready for the next step in your career development and a place to put your ideas into practice, then we want to hear from you TODAY.  You may apply on-line at our website or in person at:    1100 McKinley Road, St. Marys OH  45885



Hourly Positions


  • Performs installation, operation, maintenance, troubleshooting, and repair of heating, ventilation, cooling towers and air conditioning (HVAC) equipment and systems.
  • Performs regular cleaning, servicing, testing, and preventative maintenance tasks to help ensure that all HVAC equipment and systems function effectively and efficiently.
  • Ensures compliance with laws and regulations governing environmental protection, hazardous waste disposal and the use of chemical substances and materials.  Utilizes specialized equipment in the recovery and recycling of regulated refrigerants.
  • Provides advice and recommendations regarding equipment specifications, capabilities, and costs for decisions related to maintenance, repair, or new purchases.
  • Maintains logs and documentation and compiles reports related to maintenance and repair of equipment and systems.  
  • Audits work performed by outside HVAC services to ensure that specified results are achieved and contract terms are fulfilled.  


  • High school diploma (or equivalent) is required.  Related vocational training and HVAC license and/or certification are also required.
  • Working knowledge of precision measuring instruments, gauges, test equipment, and reading of blueprints and schematics is required.
  • Working knowledge of sheet metal fabrication, plumbing, carpentry, and personal computer operation is strongly preferred.
  • Working knowledge of 440 or 480 three-phase electrical systems, electronics, programmable logic controllers, robotics, hydraulic/pneumatic equipment and systems, and welding is preferred.
Hourly Positions


  • ​​Sets up lathes, machining centers, and robots.  Enters and edits machine programs, and sets up parameters.
  • Performs tool changes as required and verifies all dimensions using appropriate measuring instruments and gauges.
  • Performs regular quality checks, adjustments, cleaning, preventive maintenance, and minor repairs.
  • Maintains related documentation and completes S.P.C. charts and check sheets.
  • Operates and maintains coolant and filter systems.


  • At least six (6) months of related CNC machining experience and working knowledge of Statistical Process Control is required.
  • High school diploma, or equivalent, is required.


  • Starting wage rates--$20.65/hr --includes $1.00/hr attendance bonus if attendance is "perfect" for one (1) pay period (two weeks)
  • Top wage rates--$24.55/hr --includes $1.00/hr attendance bonus
  • Extra $2.00/hr weekend bonus for Sat./Sun. hours worked--IF attendance bonus is earned for same pay period
Hourly Positions

Set-up and operate a variety of machines and/or monitor processes related to the manufacture of high quality cast aluminum wheels.


  • Starting wage rates (varies by position)--$17.05/hr to $20.65/hr --includes $1.00/hr attendance bonus if attendance is "perfect" for one (1) pay period (two weeks)
  • Top wage rates (varies by position)--$20.60/hr to $24.55/hr --includes $1.00/hr attendance bonus
  • Extra $2.00/hr weekend bonus for Sat./Sun. hours worked--IF attendance bonus is earned for same pay period
Hourly Positions

Performs installation, toubleshooting, maintenance, and repair of mechanical, hydraulic, pneumatic, and robotic machinery and equipment.


  • Starting wage rate (varies by experience/skill)--$25.25/hr to $33.25/hr --includes $1.00/hr attendance bonus if attendance is "perfect" for one (1) pay period (two weeks)
  • Top wage rate --$33.25/hr --includes $1.00/hr attendance bonus
  • Extra $2.00/hr weekend bonus for Sat./Sun. hours worked--IF attendance bonus is earned for same pay period
Salary Positions

POSITION SUMMARY:  Coordinates internal and external recruiting activities and orientation and training of new associates.  Administers performance evaluation, compensation, fringe benefits, and associate involvement/recognition programs.  Administers Workers Compensation program.  Communicates regularly with associates from all levels of the organization and supports effective community relations.


  • Coordinates internal and external recruiting activities, including sourcing, screening, interviewing, and selection of qualified candidates. 
  • Conducts Company presentations, plant tours, interviews, background checks, and drug screens.  Coordinates with temporary agencies
  • Assists in onboarding, orientation, and training of new full-time and temporary associates.
  • Administers workers compensation program--including support of incident investigation and recordkeeping, preventative and corrective actions for safety improvement, claims management, hearing attendance, etc.
  • Administers performance evaluations, compensation, fringe benefits, and supports associate involvement/recognition programs
  • Communicates regularly with associates from all levels regarding Company policies, procedures, programs, and general associate relations concerns
  • Utilizes HRIS system and other software to monitor human resource metrics and compile various reports
  • Participates in activities and programs that support good public relations and effective working relationships with community organization


  • Accountability – Acknowledges and assumes responsibility for actions, behavior, decisions, reports, project updates, etc.
  • Communication Skills – Speaks and writes in a concise, clear manner to inform and influence others.
  • Conflict Resolution – Examines situation from objective viewpoint and exercises diplomacy to resolve tension or conflict between two or more individuals
  • Consensus Building – Presents alternatives and seeks consent from group of individuals to reach decision that is acceptable to all members of group
  • Customer-Oriented – Understands and willingly performs varied tasks that support the needs and requests of others
  • Detail-Oriented – Pays close attention to even small and seemingly insignificant aspects of a situation or task.
  • Empathetic – Ability to identify with and express sensitivity to others’ feelings, experiences, points of view, opinions, etc.
  • Initiative – Takes steps to perform tasks and sustains action with little or no direction from others.
  • Judgment – Forms opinion or makes decision considering available information, various perspectives, and potential ramifications.
  • Organized – Follows structured and systematic methods in planning and performing tasks.


  • Five or more years of human resource generalist experience is required--preferably in a fast-paced manufacturing setting
  • Related Bachelor degree, or equivalent, is strongly preferred
  • Prior computer experience, including HRIS systems is required
  • Demonstrated verbal and written communication skills, strong organizational skills, and attention to detail are also required

Environmental Policy

In the arena of environmental management, Kosei St. Marys (KSM) is committed to continuous improvement and will strive...

Corporate Social Responsibility

CSR is a commitment to contribute to sustainable economic development, working with employees, their families...